H-1250
FOOT-OPERATED
IMPULSE SEALER
• When the sealing arm is pressed down, a
microswitch is activated, which allows electric
current to pass through the heating element (wire).
• The timer controls sealing time. Manually controlled
sealers will not have a timer.
OPERATING ISSUE
Not sealing.
Not sealing.
Power lamp is
on.
Sealing lamp is
on.
Teflon cloth
burnt.
Heating wire
broken.
Seal is wrinkled.
Imperfect
sealing.
Broken seal.
Not fully welded
seal.
Seal is sticking.
PAGE 1 OF 6
1-800-295-5510
uline.com
TROUBLESHOOTING
CAUSES
Disconnected plug.
Heater (heating element) is broken.
Spring hook or mounting spring is loose or
poorly connected.
Loose or poor contact. Terminals and
heating element are poorly connected.
Timer malfunction prolonged heating time.
Worn Teflon adhesive under the element.
Heating timer is set too high or cooling
time is not enough.
Worn Teflon cloth. Worn silicon rubber.
Prolonged sealing time.
Sealing time too short.
Dirty Teflon cloth. Dirty silicone rubber.
Pour le français, consulter les pages 5-6.
• Sealing is followed by cooling (the amount of time
needed for the seal to set). This affects the quality of
the seal.
• In manual operation, cooling is dependent on
how long the sealing arm is pressed after the pilot
light goes off. In the automatic operation, this is the
congealing time.
RECOMMENDATIONS
Check or change the plug.
Replace the heater.
Replace or tighten spring hook connection.
Clean the terminals and adjust if needed.
Replace timer or decrease the timer setting.
Replace Teflon adhesive.
Lower the timer setting.
Continue pressing the upper leveler for 1-2
seconds after the pilot light goes off.
Replace the Teflon cloth. Replace the silicon
rubber.
Decrease timer setting.
Increase sealing time.
Clean the Teflon cover. Clean the silicon
rubber.
Para Español, vea páginas 3-4.
0425 TH-1250